Question

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Which of the following represents the belief used to justify westward expansion of America's borders in the 1800s?

Monroe Doctrine
Manifest Destiny
Adams-Onis Treaty
Missouri Compromise

Answer 1

Manifest destiny

Step-by-step explanation:

Manifest Destiny represents the belief used to justify the westward expansion of America's borders in the 1800s. Manifest Destiny helped create a western settlement and war with Mexico